The Best Way To Negotiate Is To 'Paint A Picture Of Your Opponent's Pain'

…men who measured below average on agreeableness earned about 18% more—or $9,772 more annually in their sample—than nicer guys. Ruder women, meanwhile, earned about 5% or $1,828 more than their agreeable counterparts.

Furthermore, the implicit attitude has more influential consequences than the explicit attitude, highlighting the possible subtle impact of flattery even when a person has consciously corrected for it.